[ntsc-1.2] Decompile fault.c (#2046)

* wip decomp ntsc-1.2 fault.c

* more ntsc-1.2 fault.c

* decompiled fault_v1.c

* name fault_v1 functions, wip

* try to clean up build system (two versions of the fault system coexisting)

* cleanup

* cleanup2

* fix build gc-eu-mq-dbg

* match 2 more, ty anon

* matched

* review

* more review

* fixup spec

* `(uintptr_t)ptr op int` instead of `ptr op (type*)int`

* move fault.h out of global headers, properly include fault.h and versions.h

* compile all fault_*.c files regardless of version by overriding FAULT_VERSION

* n64 FaultMgr.framebuffer s32 -> u16*

* FaultMgr.framebuffer -> FaultMgr.fb

* make gc FaultMgr.fb u16* (yes, thats everything)

* bss

* fix Fault_Printf return type

* noop FaultDrawer_SetFontColor, FaultDrawer_SetCharPad in fault_n64

* fault_color_ stuff is only for fault_gc

* rm empty line in makefile

* I guess `D_80105A90_unknown` is `[sg]TotalAllocFailures`

* bss

* `Fault_WaitInput` -> `Fault_WaitForInput`

* use named fault funcs in pointers array

* FAULT_OOT{N64,GC} -> FAULT_{N64,GC}

* Apply suggestions from code review

Co-authored-by: Derek Hensley <hensley.derek58@gmail.com>
Co-authored-by: Anghelo Carvajal <angheloalf95@gmail.com>

* review, sync fault_{gc,n64}

* Apply `FPCSR_CE` suggestions from code review

Co-authored-by: Derek Hensley <hensley.derek58@gmail.com>

---------

Co-authored-by: Derek Hensley <hensley.derek58@gmail.com>
Co-authored-by: Anghelo Carvajal <angheloalf95@gmail.com>

src/code/__osMalloc.c

@@ -1,4 +1,5 @@
 #include "global.h"
+#include "fault.h"
 #include "terminal.h"
 
 #define FILL_ALLOC_BLOCK_FLAG (1 << 0)
@@ -53,12 +54,12 @@
 #define CHECK_FREE_BLOCK(arena, node) (void)0
 
 // Number of allocation failures across all arenas.
-u32 sTotalAllocFailures = 0;
+u32 gTotalAllocFailures = 0; // "Arena_failcnt"
 
 #define CHECK_ALLOC_FAILURE(arena, ptr) \
     do {                                \
         if ((ptr) == NULL) {            \
-            sTotalAllocFailures++;      \
+            gTotalAllocFailures++;      \
             (arena)->allocFailures++;   \
         }                               \
     } while (0)